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From: Tek
Subject: Black Hole Research
Date: 4 May 2007 22:50:13
Message: <463bf0e5@news.povray.org>
I seem to be suffering a bit of creative drought.

I had no idea what to POV next, but when I saw Gail Shaw's post I thought 
"ooh I'd like to do a space ship!", then I saw Skip Talbot's post and 
thought "ooh I'd like to fake a nebula in 2D on the sky_sphere". So in 
addition to ripping off their ideas I also decided to rip off the films 2001 
and Sphere. The only slightly original idea here was the black hole, though 
it's no coincidence that the idea occured after I saw the current 3Drtc 
topic: "the black cloak".

Uh... anyway... The cool black hole effect is achieved with a refractive 
object shaped so that it has no refraction at the edges when viewed from the 
camera's point of view, effectively making it a 2D distortion. I then use 
several such objects at different distances to create the event horizon, the 
"sucking" effect, and the smaller distortion on the ship.

Other than that it's all CSG on the spaceship, and the nebula, stars, and 
sun are just a layered pigment on the sky_sphere.

comments? questions?
-- 
Tek
http://evilsuperbrain.com


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From: Thomas de Groot
Subject: Re: Black Hole Research
Date: 5 May 2007 03:46:03
Message: <463c363b$1@news.povray.org>
"Tek" <tek### [at] evilsuperbraincom> schreef in bericht 
news:463bf0e5@news.povray.org...
>I seem to be suffering a bit of creative drought.

Really??  :-)

> Uh... anyway... The cool black hole effect is achieved with a refractive 
> object shaped so that it has no refraction at the edges when viewed from 
> the camera's point of view, effectively making it a 2D distortion. I then 
> use several such objects at different distances to create the event 
> horizon, the "sucking" effect, and the smaller distortion on the ship.

I am not sure I understand the technical part, but it is very clever 
nonetheless.
To make it even better: black holes spin usually, dragging light with them. 
Could you simulate that distortion too?

Thomas


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From: Gail Shaw
Subject: Re: Black Hole Research
Date: 5 May 2007 04:05:12
Message: <463c3ab8@news.povray.org>
"Tek" <tek### [at] evilsuperbraincom> wrote in message
news:463bf0e5@news.povray.org...
>
> comments? questions?

Very nice.

I'm not sure about the distortion ring. To me it looks like the black hold
is surrounded by a torus of glass. The other effects are really cool.


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From: nemesis
Subject: Re: Black Hole Research
Date: 5 May 2007 04:35:01
Message: <web.463c412a7bdc317510a8e1120@news.povray.org>
"Thomas de Groot" <t.d### [at] internlDOTnet> wrote:
> "Tek" <tek### [at] evilsuperbraincom> schreef in bericht
> news:463bf0e5@news.povray.org...
> >I seem to be suffering a bit of creative drought.
>
> Really??  :-)

quick!  Someone hijacked Tek's news.povray.org account! :))

way cool, Tek!  Of course, a real black hole doesn't actually sucks things
ordinarily orbiting them safely away from the event horizon, but still...


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From: Orchid XP v3
Subject: Re: Black Hole Research
Date: 5 May 2007 05:03:44
Message: <463c4870$1@news.povray.org>
Mmm, I like it.

The ship itself seems a bit bland, but the rest of the image is really 
quite good.


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From: Tek
Subject: Re: Black Hole Research
Date: 5 May 2007 07:39:51
Message: <463c6d07@news.povray.org>
Well the sucking effect is created using a funny shaped lens, but as far as 
I know it's impossible to make a lens that will rotate things...
Although maybe if I stick a radial normal on there... hmm...

-- 
Tek
http://evilsuperbrain.com

"Thomas de Groot" <t.d### [at] internlDOTnet> wrote in message 
news:463c363b$1@news.povray.org...
>
> "Tek" <tek### [at] evilsuperbraincom> schreef in bericht 
> news:463bf0e5@news.povray.org...
>>I seem to be suffering a bit of creative drought.
>
> Really??  :-)
>
>> Uh... anyway... The cool black hole effect is achieved with a refractive 
>> object shaped so that it has no refraction at the edges when viewed from 
>> the camera's point of view, effectively making it a 2D distortion. I then 
>> use several such objects at different distances to create the event 
>> horizon, the "sucking" effect, and the smaller distortion on the ship.
>
> I am not sure I understand the technical part, but it is very clever 
> nonetheless.
> To make it even better: black holes spin usually, dragging light with 
> them. Could you simulate that distortion too?
>
> Thomas
>
>


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From: Tek
Subject: Re: Black Hole Research
Date: 5 May 2007 07:41:43
Message: <463c6d77@news.povray.org>
"Gail Shaw" <initialsurname@sentech sa dot com> wrote in message 
news:463c3ab8@news.povray.org...
> I'm not sure about the distortion ring. To me it looks like the black hold
> is surrounded by a torus of glass. The other effects are really cool.

It's actually more of a cone shape, but it is very much a glass-like 
material. I'll work on it a bit more to make it less obvious...

-- 
Tek
http://evilsuperbrain.com


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From: Alain
Subject: Re: Black Hole Research
Date: 5 May 2007 10:03:02
Message: <463c8e96@news.povray.org>
Tek nous apporta ses lumieres en ce 05-05-2007 07:42:
> Well the sucking effect is created using a funny shaped lens, but as far as 
> I know it's impossible to make a lens that will rotate things...
> Although maybe if I stick a radial normal on there... hmm...
> 
You may have a look at spiral normals, it's more evocative of a rotation.

-- 
Alain
-------------------------------------------------
Destroy the Borg?  Upload Windows 95 !


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From: Christian Froeschlin
Subject: Re: Black Hole Research
Date: 5 May 2007 15:13:14
Message: <463cd74a$1@news.povray.org>
The ship seems to be sitting awfully close to the event horizon.
It would probably need to orbit at relativistic speeds itself ;)


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From: Tek
Subject: Re: Black Hole Research - new version
Date: 6 May 2007 08:43:51
Message: <463dcd87@news.povray.org>
Swirly effect! I added a radial normal to my distortion effect, which is 
ramped up towards the middle of the effect to things get swirled more the 
closer they get.

-- 
Tek
http://evilsuperbrain.com

"Tek" <tek### [at] evilsuperbraincom> wrote in message 
news:463bf0e5@news.povray.org...
>I seem to be suffering a bit of creative drought.
>
> I had no idea what to POV next, but when I saw Gail Shaw's post I thought
> "ooh I'd like to do a space ship!", then I saw Skip Talbot's post and
> thought "ooh I'd like to fake a nebula in 2D on the sky_sphere". So in
> addition to ripping off their ideas I also decided to rip off the films 
> 2001
> and Sphere. The only slightly original idea here was the black hole, 
> though
> it's no coincidence that the idea occured after I saw the current 3Drtc
> topic: "the black cloak".
>
> Uh... anyway... The cool black hole effect is achieved with a refractive
> object shaped so that it has no refraction at the edges when viewed from 
> the
> camera's point of view, effectively making it a 2D distortion. I then use
> several such objects at different distances to create the event horizon, 
> the
> "sucking" effect, and the smaller distortion on the ship.
>
> Other than that it's all CSG on the spaceship, and the nebula, stars, and
> sun are just a layered pigment on the sky_sphere.
>
> comments? questions?
> -- 
> Tek
> http://evilsuperbrain.com
>
>
>


Post a reply to this message


Attachments:
Download 'space simple.jpg' (283 KB)

Preview of image 'space simple.jpg'
space simple.jpg


 

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